/Engine/Source/Runtime/MovieSceneTracks/Public/Systems/MovieSceneMaterialSystem.h
void OnPostSpawn ( [UMovieSceneEntitySystemLinker](API\Runtime\MovieScene\EntitySystem\UMovieSceneEntitySystemLinker) * InLinker, [TComponentTypeID](API\Runtime\MovieScene\EntitySystem\TComponentTypeID)< RequiredComponents >... InRequiredComponents )